Which Kicker 5 chnl, the zxm700.5 or the IX1000.5? The JL M700/5 will deliver 200W x 2 @ 14.4V and 300W x 1 @ 14.4V w/a 2 ohm load. The Kicker ZXM700.5 will deliver 165W x 2 @ 14.4V and 420W x 1 @ 14.4 w/a 2 ohm load.

A little more head-room to the tower speakers, but nothing seat-of-the-pants volume wise. The JL is about 30% less on the sub chnl then the Kicker. This could be a noticeable difference depending on sub, enclosure and location/orientation
The real benefit is the full-range Class-D of the JL, where the ZXM-700.5 is Class-A/B.

The Kicker IX1000.5 5 chnl amp would deliver 250W x 2 and 500W x 1 to a 2 ohm sub. Price wise, its in line with the JL I believe, and is also full-range Class-D.